Keenan Crane's [1] lab has been putting out some top notch research in recent years.

In particular, their work on discrete differential geometry [2] is really worth diving into (and Mr Crane is a really good pedagogue).

[1] https://www.cs.cmu.edu/~kmcrane/

[2] https://www.youtube.com/watch?v=mas-PUA3OvA&list=PL9_jI1bdZm...